Richland, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Richland is known for the Hanford Site and the Columbia River. The best time to travel to Richland, United States, is in late spring (May to June) when the average air temperature is around 70-80°F and the Columbia River water temperature is approximately 60-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!